28243702 has 4 divisors (see below), whose sum is σ = 42365556. Its totient is φ = 14121850.

The previous prime is 28243687. The next prime is 28243717. The reversal of 28243702 is 20734282.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28243687) and next prime (28243717).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7060924 + ... + 7060927.

It is an arithmetic number, because the mean of its divisors is an integer number (10591389).

Almost surely, 2^28243702 is an apocalyptic number.

28243702 is a deficient number, since it is larger than the sum of its proper divisors (14121854).

28243702 is a wasteful number, since it uses less digits than its factorization.

28243702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121853.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28243702 is about 5314.4804073399. The cubic root of 28243702 is about 304.5373330952.

Adding to 28243702 its reverse (20734282), we get a palindrome (48977984).

The spelling of 28243702 in words is "twenty-eight million, two hundred forty-three thousand, seven hundred two".